Ch 2 Structural systems

Question 1

Compared to a load that is slowly applied, the impact of the load that is suddenly applied to a structure is:

Answer 1

D. Up to twice as much stress

Question 2

Cracks in a concrete structure are repaired using?

Answer 2

B. Cement with chilled water

Question 3

What type of foundation is the weight of the soil removed approximately equal to the calculated weight of the foundation plus the structure above?

Answer 3

B. Raft foundation

Question 4

High rise building construction most typically incorporates:

Answer 4

D. Combined steel and concrete

Question 5

List three groups of structural stress:

Answer 5

B. Tensile, compressive and shear

Question 6

Most common type of single story, light commercial construction is:

Answer 6

A. Load bearing wall construction

Question 7

Advantages and properties of steel that are beneficial to building construction and structural longevity are high strength, uniformity, permanence, ductility and?

Answer 7

C. Elasticity

Question 8

List three general types of in-site pile foundations

Answer 8

A. Augered in place piles, tapered piles, caissons

Question 9

Soil property that refers to the rate at which water will travel through soil is called?

Answer 9

B. Permeability

Question 10

Which of the following is true about wind loads?

Answer 10

C. Wind load creates suction on the leeward side of the building

Question 11

______ are often loadbearing wall materials, but are also used in non-loadbearing curtain walls.

Answer 11

A. Block and brick

Question 12

Which of the following is a disadvantaged of steel

Answer 12

B. Expensive to fireproof

Question 13

Which is not a classification of structural lumber?

Answer 13

A. Ply

Question 14

How are builders able to overcome the disadvantages of wood?

Answer 14

D. By paying for protective measures

Question 15

Clay tends to _____ with changes in the moisture contained in the subsoil.

Answer 15

D. Expand and shrink

Question 16

Types of Structural Elements are:

Answer 16

Floor and roof
Beams and girders
Walls and foundations

Question 17

Dead loads:

Answer 17

Weight of walls, columns, roofs, plumbing A/C or building servicing equipment.

Question 18

Live Loads:

Answer 18

Weight of occupants, furniture, snow, water and wind

Question 19

Stress placed by earthquake is:

Answer 19

Seismic load.

Question 20

Stress measured in:

Answer 20

PSI

• Tensile
• Compressive
• Shear

Question 21

Open Web floor joints:

Answer 21

Are expected to carry light floor loads and not subject to vibration.

Question 22

Three visual symptoms of distress are:

Answer 22

Spalling, disintegration and cracking

Question 23

When chlorides melting in snow are a concern:

Answer 23

Saline concrete surface sealers should be applied to reduce corrosion.

Question 24

Curtain wall:

Answer 24

Is non-load-bearing intended to separate interior and exterior.

Question 25

Four types of building construction are:

Answer 25

Load bearing, Skeletal, long span and combo of steel and concrete.

Question 26

Skeletal Construction:

Answer 26

Most common for steel.

Question 27

Beam and column:

Answer 27

Typically spaced 24 to 36 ft apart, beams and girders in both directions.

Question 28

Five types of deterioration for steel are:

Answer 28

Corrosion, abrasion, loosening of connections, fatigue and impact.

Question 29

Beams are horizontal

Answer 29

Studs are vertical

Question 30

Three major divisions of soil are:

Answer 30

- Coarse grained, non-cohesive - sand and soil - Fine grained, cohesive - silt and clay - Organic includes pent and loom

Question 31

Liquid limit:

Answer 31

Determines moisture limit at which soil will turn to clay.

Question 32

Mat foundation:

Answer 32

Thickened slab that supports loads and transmits as one unit.